HHM17125D1

Balun Overview

The HHM17125D1 is a surface-mount RF balun transformer manufactured by TDK Corporation. It operates within the frequency range of 2.4GHz to 2.5GHz, designed for wireless communication applications. The component features a 50/50 Ohm impedance configuration (unbalanced/balanced) and provides a phase difference of 180 degrees. Key electrical specifications include a maximum insertion loss of 1.3dB and a minimum return loss of -10dB. It is housed in a compact 0603 (1608 Metric) package with six printed circuit board pads.

Balun Feature Summary

• Provides balanced-to-unbalanced signal conversion for RF circuits
• Optimized for 2.4GHz to 2.5GHz wireless frequency bands
• Compact 0603 surface-mount footprint for space-constrained designs

Balun Applications

• Wireless LAN modules operating in the 2.4GHz ISM band
• Bluetooth low energy (BLE) transceiver interfaces
• Zigbee and other IEEE 802.15.4 based sensor networks

Balun Procurement Notes

Verify component status as this part is officially listed as obsolete by the manufacturer. Confirm availability through authorized distributors or secondary market suppliers, noting that new production has ceased. Ensure compatibility with existing PCB layouts before procurement, as replacement sourcing may involve lead time variability. Validate RoHS compliance documentation for current stock batches.

Balun Selection Notes

Select this component when a 50-ohm single-ended to differential conversion is required at 2.45GHz. The 0603 package size suits high-density surface mount assembly processes. Consider the specified insertion loss and return loss limits against system link budget requirements. Verify that the 180-degree phase shift aligns with the target mixer or amplifier architecture.

Balun Part Context

This balun belongs to TDK's HHM series of passive RF components. These devices are engineered for integration into portable electronic devices requiring reliable signal integrity in crowded radio frequency environments. The specific model targets industrial, scientific, and medical bands commonly used for short-range wireless data transmission protocols.

Balun Replacement Considerations

No direct substitute part numbers are publicly confirmed by TDK for this obsolete component. Engineers should evaluate equivalent baluns from other manufacturers offering similar 2.4GHz performance and 0603 footprints. Design re-verification is necessary when selecting alternative sources due to potential variations in parasitic characteristics.